Terrible MPG in my 2021 F150 Powerboost

[DBL R]

I skimmed most of the pages here and one thing I don't see: the drive ratio. If you have 3.73, that's going to make a difference from 3.31 (just the simple math). Things get a bit more complicated when the engine is working hard, of course. But for general commuting, I think it makes sense that 3.73 will return ~13% worse mileage. So if the 3.31 returns 24mpg, then 3.73 would return 21mpg (super rough estimates, PLENTY of other factors of course!) 4x4 would also make a difference.
Still, for those with super high or super low mileage, please add if you're 4x4 and your ratio's, I think that might help explain some numbers.

I believe that the Pb only comes with the 3.73

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[SouthParkCo2]

My 2 cents worth ... Two pictures, two trips, using Eco mode .... Up in elevation and then back down, several days later. [in Colorado]

First picture of a trip starting in Aurora, CO @ 5700 ft and arriving near Hartsel, CO @ 9300 ft.

Second picture of the trip from our cabin near Trout Creek Pass [Hartsel, CO] @ 9300 ft back down to our house in Aurora, CO @ 5700 ft.

2022 F150 XLT 4x4 Power Boost 3.73 of course w/18" Michelin tires.
I'm coming from a 2017 Tacoma [which I'm cleaning up to sell].
My hope was always, "Please just match the Taco mileage and
I'll be a reasonably happy camper."
So.............. I'm a damn happy camper at this point. ?
I've never gotten better than 18.5 mpg going up the mountain,
nor better than 22.5 mpg coming back down with the Taco.
[and that was in the middle of summer, of course]

My conclusions: Great power if you need it, but economy if you want to earn it!

 

[Oxford_Powerboost]

I skimmed most of the pages here and one thing I don't see: the drive ratio. If you have 3.73, that's going to make a difference from 3.31 (just the simple math). Things get a bit more complicated when the engine is working hard, of course. But for general commuting, I think it makes sense that 3.73 will return ~13% worse mileage. So if the 3.31 returns 24mpg, then 3.73 would return 21mpg (super rough estimates, PLENTY of other factors of course!) 4x4 would also make a difference.
Still, for those with super high or super low mileage, please add if you're 4x4 and your ratio's, I think that might help explain some numbers.

All 4x4 powerboosts are 3.73 and 2WD are 3.55

 

[GregBC]

Ah, thanks for that!

 

[Atlee]

I averaged 20.5 mpg today driving from VA to FL. Drove the speed limit (mostly 70 mph) the entire trip. I have a 4x4 PB which has the 3.73 rear.

 

[DT444T]

I religiously get 21-24 MPG. The only upgrade was I leveled it out with a 2 1/4 inch front lift.

This is nice to hear, since I have a level waiting for me at home. I have no plan to do any taller on the tires, at least for summer/road trips. Maybe a LITTLE more meat for the winter.

 

[powerboost]

This is nice to hear, since I have a level waiting for me at home. I have no plan to do any taller on the tires, at least for summer/road trips. Maybe a LITTLE more meat for the winter.

The level will hurt a little because of allowing more air to flow under chassis. Update us on how it is after level .......thanks!

 

[Jus Cruisin]

Made a trip to Port Clinton Ohio this week. The LOM showed 22.3 mpg for the round trip. I wasn't in a hurry and set the cruise right at the speed limits. Good with that. I've been getting in the middle teens over the winter months with short trips that really didn't let the engine get up to operating temps.

 

[treg00]

It's science...not members being D-bags. You complain about a decrease in MPG after you added a lift, tires, and did not recalibrate your speedometer. Childish? You ridicule members who like to leave their trucks stock and lash out to everyone who comments. No is going to agree with your cause...science proves you wrong with aerodynamics and increased mass.

I will give you some real help. If you want to hit 20mpg or better. Put your truck back to stock. If not, deal with the decrease. If you follow the towing thread for the powerboost trucks you can see weight really drags the MPG down. Personally, I'm fine with this. I tow a half dozen times a year. The rest of the time, I can enjoy mpg's that are 20+ for 95% of my driving.

I only got 16 and some change stock and after a 2 in front level, still only getting 16 and some change. A 2 in front level didn't seem to change anything, and wouldn't cause the mpg to be that much lower than other people's stock trucks anyway. I have never even seen the number 17. I think something is wrong with my particular truck.

 

[notabot]

I only got 16 and some change stock and after a 2 in front level, still only getting 16 and some change. A 2 in front level didn't seem to change anything, and wouldn't cause the mpg to be that much lower than other people's stock trucks anyway. I have never even seen the number 17. I think something is wrong with my particular truck.

How heavy is your right foot? Do you do a lot of 75-85 mph highway? Those are the two things that take my PB from 20-21 to 14-17.

 

[Wvmtneer]

How heavy is your right foot? Do you do a lot of 75-85 mph highway? Those are the two things that take my PB from 20-21 to 14-17.

I noticed that cold weather, near freezing or below, decreases my mileage as well.
Does anyone know what temperature starts to affect the battery performance/longevity?

 

[treg00]

How heavy is your right foot? Do you do a lot of 75-85 mph highway? Those are the two things that take my PB from 20-21 to 14-17.

Well, yes I do. Usually around 75 or less, but I have seen many people on here post their screens saying they also go that fast and they get 20. I literally have never seen mine go higher than 16 point somthing, using normal or eco drive modes.

 

[scott011422]

I'm finding it matters greatly on your driving. going to work i'm getting 20 in the summer. But to lunch in the next town? 24. Lunch in same town? 14. 75 on the tollway? 18. Driving to other towns? 24.

The mix of speeds and time spent at those speeds mean everything.

 

[notabot]

Well, yes I do. Usually around 75 or less

60 mph is the sweet spot in my truck for best hwy speed mpg. Many of our two lane undivided roads are 60 mph and it will even go into electric mode on them. FWIW, our expressways are normally 75-85 mph or stop and go.

Have you made sure your odometer is reflecting actual miles traveled?

 

[doolin64]

I definitely drive different in this truck, but I'm pleased with the MPG. I'm sure if drove with heavy foot it would drop to the 18's, but I love driving it to try and maximize my MPG. I was hoping I could average 20mpg and after 1500 miles ownership (truck has 11,000 miles) I'm averaging 20.8mpg. This includes remote starts in the morning to warm up the truck and this on winter gas. I always see about a 2mpg drop in mileage for the winter. Truck is all stock.

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